HappyKey vs EdTechTerms
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HappyKey
This app offers a specialized keyboard for easily inputting a wide range of mathematical symbols. It includes numbers, operators, pi, infinity, and more, simplifying the process of writing math notation on your device.
- Specialized math symbol keyboard
- Includes numbers and operators
- Supports pi and infinity symbols
- Simplifies math notation input
- Customizable keyboard layout
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HappyKey provides you with a simple keyboard with many useful math symbols. It will fulfill all of your math notation needs with numbers, superscripts, pi, math operators and relations, infinity, and beyond. Install the app first, then to setup the keyboard go to Settings > General > Keyboard > Keyboards > Add New Keyboard > HappyKey Note: This is not a calculator. This is an additional keyboard that makes it easier to type math notation. Credit for the keyboard functionality and design goes to the open source Tasty Imitation Keyboard by Alexei Baboulevitch (GitHub user archagon).
EdTechTerms
This app provides quick definitions and references for technology terms, especially those used in education. It helps users understand new or unclear terms during presentations, writing, or discussions. Access thousands of tech terms, build personal lists, and filter by category.
- Quick definitions for tech terms
- References for education technology
- Thousands of tech terms
- Personalized term lists
- Daily term highlights
- Category filtering
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EdTechTerms is your quick source for definitions and references when a term is new or fuzzy. Access terms during a challenging presentation. Find the right term when writing. Follow a discussion like an expert. EdTechTerms defines thousands of tech terms both specific to education and general to technology. Build a personal list, see daily terms, and filter by categories.
Screenshots
Verdict
The clearest difference is review sentiment: EdTechTerms at 100% against HappyKey's 50%. EdTechTerms also leads on rating (5.0 vs 3.7) and update cadence (every 4 days vs every 8 months). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EdTechTerms holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 9 and 7 respectively. Written reviews point the same way: 50% of HappyKey's written reviews are positive against 100% of EdTechTerms's.
HappyKey ships an update every 8 months, EdTechTerms every 4 days. The most recent releases landed on September 24, 2026 and October 3, 2026 respectively.
| Parameter | HappyKey | EdTechTerms |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (9 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 — better | 7 |
| Update frequency | Every 8 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Baratti | ESP Solutions Group, Inc. |
Customer experience
HappyKey
EdTechTerms
In-app purchases
HappyKey
No in-app purchases
EdTechTerms
No in-app purchases
